Comparison

Lottie Tester vs Hardcore Focus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lottie Tester

Easily test Lottie animations directly on your device. Open JSON files to play, pause, and verify animations, checking for artifacts and glitches. Adjust background color and scale to ensure proper rendering.

Highlights
  • Open Lottie JSON files
  • Play and pause animations
  • Change background color
  • Scale animation axes
  • Verify animation rendering
Read full description

Got a Lottie JSON file and want to verify it's working on a device? Open and play it directly in this app to validate it's working as expected. Sometimes when exporting a Lottie file it might contain artifacts and glitches. To verify the export has worked properly, just play it with the Lottie Tester. - Open Lottie JSON files - Play and pause the animation - Change the background color to verify the Lottie's transparent background - Shrink the X or Y axis to scale the animation and see how it reacts - Uses Lottie v4.5.0

About

Hardcore Focus

This app encourages focused work by having users commit to a single, meaningful task for a two-hour period. It blocks distractions and tracks your focus sessions, helping you accomplish real work instead of just managing tasks.

Highlights
  • Single daily task focus
  • 2-hour deep work timer
  • Distracting app blocking
  • Distraction tracking
  • Progress logging
  • Streaks and achievements
  • Widgets and Live Activities
Features
Read full description

Hardcore Focus blocks distracting apps with Screen Time, then runs a focus session toward a daily goal. Habits next to it. No account. No VPN. Three things: Focus, Habits, and Shield. No to-do list. No calendar. SHIELD — BLOCK THE NOISE Block the apps that steal your day with Apple’s native Screen Time API. On a schedule, during a focus session, or always on. You choose how hard it is to get back in: • No Bypass — locked is locked • 15-Minute Bypass — one short, deliberate exception FOCUS — DO DEEP WORK One button. Tap it and work until you’re done — no countdown, no 25-minute cycle. Keep the screen awake. Optional Apple Music focus playlist. Watch your daily focus goal fill up on the ring. Pause when life happens. Live Activity and Dynamic Island keep the timer visible. HABITS — FILL THE TIME YOU GET BACK Stack habits into routines by time of day. Check them off, count reps, or run a timed habit. Workouts, walks, and mindful minutes can auto-complete from Apple Health. Keep the streak on the habits that matter. ALSO • Apple Watch — start sessions and complete habits from your wrist • Siri & Shortcuts • Widgets, Live Activities & Dynamic Island • On-device insights into your focus patterns (on your phone) • Apple Music focus playlists inside the session • iCloud sync across iPhone, iPad & Apple Watch — no Hardcore Focus account PRIVATE BY DESIGN Zero data collection. Anything you sync stays in your own iCloud. WHO IT’S FOR People who already know which apps steal the day and keep opening them anyway. Block, focus, show up for the habits. WHO IT’S NOT FOR SUBSCRIPTION Hardcore Focus requires a subscription. Annual includes a 7-day free trial. Then Weekly ($3.99), Monthly ($8.99), or Annual ($49.99). Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage or cancel anytime in Settings → Subscriptions. Terms: https://www.hardcorefocus.com/terms Privacy: https://www.hardcorefocus.com/privacy Support: https://www.hardcorefocus.com

Screenshots

Lottie Tester4 screens
Hardcore Focus1 screens

Verdict

The call

The clearest difference is in-app purchases: Lottie Tester at none against Hardcore Focus's 3. Lottie Tester also leads on iOS requirement (17.5 vs 26.0). Hardcore Focus's advantage is ratings volume (12 vs 1). On price, rating, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hardcore Focus sells 3 in-app purchases, starting at $3.99 per 7 days. Lottie Tester asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Lottie Tester against 5.0 for Hardcore Focus. That said, the two scores are not equally well evidenced: Hardcore Focus has 12 ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
Lottie Tester versus Hardcore Focus: the parameters behind the verdict, then further details
ParameterLottie TesterHardcore Focus
PriceFreeFree
Rating5.0 (1 ratings)5.0 (12 ratings)
Positive reviews—100.0% of reviews
Number of ratings112 — better
Update frequency—Monthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.5 — better26.0
Further details — not scored
Size3 MB20 MB
Age rating4+4+
DeveloperSven KorsetEric Kuhn

Customer experience

Lottie Tester

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Hardcore Focus

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews11 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Lottie Tester

No in-app purchases

3 purchases

Hardcore Focus

Subscriptions3
  • Hardcore Focus Weekly$3.997 Days
  • Hardcore Focus Pro Monthly$8.991 Month
  • Hardcore Focus Pro Annual$49.991 Year

Questions

Is Lottie Tester free?
Lottie Tester is free to download, with no in-app purchases.
Is Hardcore Focus free?
Hardcore Focus is free to download, with in-app purchases available.
Which has better reviews, Lottie Tester or Hardcore Focus?
Lottie Tester and Hardcore Focus are both rated 5.0 out of 5 on the App Store, from 1 and 12 ratings respectively.
Do Lottie Tester or Hardcore Focus have ads?
Neither Lottie Tester nor Hardcore Focus shows ads.

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